Otherwise the executable cannot be found where specified.
v2: Use 'xwayland_path' (Simon)
Fixes: fbf5e26b5 - xwayland: Use full path for Xwayland exec
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1490>
(cherry picked from commit 8ff88ffec9)
v3: remove extra parentheses